Tony Gregori Books

The Worst Dudes

By Written By Aubrey Sitterson Illustrated By Tony Gregori Color Art By Lovern Kindzierski Letters By Taylor Esposito

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A dirty cop, a drugged-up back-up dancer, and an angsty adolescent god; the absolute worst dudes in the galaxy are on a raunch-filled hunt for a missing pop star.It's a hilarious, aggressively weir...

Karma Police

By Chris Lewis, Tony Gregori, Jasen Smith, Nic Shaw

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Teenage Mutant Ninja Turtles: The IDW Collection Volume 16

By Campbell Sophie Waltz Tom

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Presenting the complete TMNT stories in recommended reading order, including one-shots and event series. Everything a beginner could need; everything a diehard could want.The Turtles come face-to-f...

How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.